The three blank boxes I need help figuring the values. 

And b-1 I got 2.819 which was incorrect, but I am not sure how and why. 

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Observations are taken on sales of a certain mountain bike in 24 sporting goods stores. The regression model was Y= total sales (thousands of dollars), X1 = display floor space (square meters), X2 = competitors' advertising expenditures (thousands of dollars), X3 = advertised price (dollars per unit). (a) Fill in the values in the table given here. (Negative values should be indicated by a minus sign. Leave no cells blank - be certain to enter "O" wherever required. Round your t-values to 3 decimal places and p-values to 4 decimal places.) Coefficient tcalc p-value 0.0004 Predictor SE 4.178 Intercept FloorSpace Competing Ads 1,254.2 300.2 11.310 1.69 6.692 0.000 -6.260 3.999 -1.565 Price -0.14748 0.08280 Observations are taken on sales of a certain mountain bike in 24 sporting goods stores. The regression model was Y= total sales (thousands of dollars), X1 = display floor space (square meters), X2 = competitors' advertising expenditures (thousands of dollars), X3 = advertised price (dollars per unit). (a) Fill in the values in the table given here. (Negative values should be indicated by a minus sign. Leave no cells blank - be certain to enter "O" wherever required. Round your t-values to 3 decimal places and p-values to 4 decimal places.) Coefficient tcalc p-value 0.0004 Predictor SE 4.178 Intercept FloorSpace Competing Ads 1,254.2 300.2 11.310 1.69 6.692 0.000 -6.260 3.999 -1.565 Price -0.14748 0.08280

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